軸対称物体のすきま流励起振動に関する研究 : すきま流路における絞り要素の安定性への影響(機械力学,計測,自動制御)

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  • Study on Leakage-Flow-Induced Vibrations of an Axsymetric Body : Effect of Stability of Throttle Element in Leakage Passage(Mechanical Systems)
  • 軸対称物体のすきま流励起振動に関する研究--すきま流路における絞り要素の安定性への影響
  • ジク タイショウ ブッタイ ノ スキマリュウレイキシンドウ ニ カンスル ケンキュウ スキマリュウロ ニ オケル シボリ ヨウソ ノ アンテイセイ エ ノ エイキョウ

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抄録

The stabilities of the rigid models equipped with three different types of the lengths of throttle element in the inlet of leakage passage were examined experimentally and theoretically because the mechanism of the instability occurrence due to cavitating leakage flow was clarified. The experimental results of the damping ratio of the models could be explained the trend in the stability of the system in cavitating flow. The analytical equations would be valid as the calculated results of the damping ratio were in agreement with experimental results. Like the system in cavitating, flow, the self-excited vibrations occurred in the model, when the throttle element was located in near the center of the passage.

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